VS 2010 Convert System.Object To Datatable Or Array?

Jul 18, 2011

I'm pulling data from a D3 database, using an api.

The api can do the following: Dim OBJ As Object = mvsp.MVResultSetGetRows.ToArray()

But how do I get that data into a datatable to use as the datasource for a DataGridView?

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VS 2010 : System.ArgumentException Was Unhandled Message=DataTable 'get_item_list' Does Not Match To Any DataTable In Source

Apr 21, 2010

I am working on a project that takes an xml schema and xml data files and places them into a DataTable, the 2 files are generated from a working table that i have written to disk. I wish to load these 2 files into a DataTable. Here is What i have

Friend Function CreateTable(ByVal tableName As String) As Boolean
Dim table As New DataTable(tableName)
table.ReadXmlSchema(tableName & ".xsd")


this however produces the following error on line 3


System.ArgumentException was unhandled Message=DataTable 'get_item_list' does not match to any DataTable in source.

get_item_list is the parameter passed into this function (tableName)

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Convert A System.Object To A System.Collections.Arraylist?

Oct 13, 2010

I am using Visual Studio 2005 and am writing a SSIS package. In the package I have a VB.Script that looks at a directory on a server and creates a list of the files. I then have a store Proc that looks at a table and gets a list of files that matches the files in the first array. The result is a fullresultset. The next step I need to create a 3rd array that only contains the rows from the first that are not in the second. However, I am getting the following error. Error: The script threw an exception: Unable to cast object of type 'System.Object' to type 'System.Collections.ArrayList'.

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ASP.Net Error - Unable To Cast Object Of Type 'System.String' To Type 'System.Data.DataTable'

Oct 4, 2009

I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.This is the code I'm using

Dim str As String = String.Empty
If (Session("Brief") IsNot Nothing) Then
Dim dt As DataTable = Session("Brief")
If (dt.Rows.Count > 0) Then


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Convert Datatable Byte Array To Image?

Mar 6, 2009

I've created a new access 2007 database + added a OLE Object field, that i've then pasted images into.in vb2008 I've connected to the database + put the table into a datatable. so far it works ok.when i try to convert the byte array to an image, it causes an error:

'A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll'heres the code i'm using[code]....

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Error - LINQ To Entities Does Not Recognize The Method 'System.Object IIf(Boolean, System.Object, System.Object)'

Jul 29, 2011

I am getting following error whenever I want to use IIf function inside entity framework query.

LINQ to Entities does not recognize the method 'System.Object IIf(Boolean, System.Object, System.Object)' method, and this method cannot be translated into a store expression.

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[2008] Convert Datatable Byte Array To Image?

Mar 6, 2009

i've created a new access 2007 database + added a OLE Object field, that i've then pasted images into.

in vb2008 i've connected to the database + put the table into a datatable. so far it works ok.

when i try to convert the byte array to an image, it causes an error:

'A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll'

heres the code i'm using:


Dim arr() As Byte = DirectCast(record.Item(5), Byte())
pic.Image = Image.FromStream(New IO.MemoryStream(arr))

its loading the byte array properly, but the Image.FromStream line causes the error. i've used this method before with an earlier access database + it works.

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Method 'System.Object CompareObjectEqual(System.Object, System.Object, Boolean)' Has No Supported Translation To SQL.?

Apr 16, 2010

What do I need to convert?

Dim CEESearchByAppNo = From CEEsearch In dbCEE.tblScanneds _
Where CEEsearch.AppNo = iAppNo


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VS 2010 - Unable To Cast Object Of Type 'System.String' To Type 'System.Object[]'

Jan 25, 2011

For I = 0 To 10
If Items.Count = 0 Then Exit For
Dim T As New Thread(AddressOf Thread)
T.Start(New Object() {"Test", "Test"})


When I put same code in empty project it works.

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Convert An Object Form System.Drawing.Graphics To System.Drawing.Image?

May 23, 2009

Is it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?

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Convert An Object System.Data.Linq.DataQuery To System.Linq.IQueryable?

Oct 21, 2009

How can I convert an object of type System.Data.Linq.DataQuery to System.Linq.IQueryable?I'm working with Visual Basic/Silverlight, and the source code of my query is as follows:

Public Function Get_Cli_Pag() As IQueryable(Of V_Cliente_Pagare)
Dim Qry = From P In Me.Context.Pagares Join C In Me.Context.Codigos On C.Codigo


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Convert An Array Of Any Object To A CSV List?

Feb 28, 2009

I am using Linq to convert an array of any object to a CSV list:String.Join(",", (From item In objectArray Select item.ToString()).ToArray())

This is giving me the strange error: "Range variable name cannot match the name of a member of the 'Object' class."I can get round it by wrapping the string in a VB StrConv method, with a setting of "Nothing":String.Join(",", (From item In oArray Select StrConv(item.ToString(), VbStrConv.None)).ToArray())

However, this seems like a bit of a hack and I would like to avoid it.Does anyone have any ideas when this problems occurs, and any better ways to get round it?

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Convert Byte-array To Object?

Aug 16, 2010

in my project I use an Excel workbook as template. Right now, this workbook is located in the same directory as the exe-assembly and can be opened and manipulated by the user. To avoid this, I thought about adding the workbook to a ressource. That works. Problem: how can I convert the resulting byte-array/stream back to a workbook-object?I tried like this, but - obviously - the conversion fails:

Public Shared Sub test()
Dim wkb As Excel.Workbook
Dim bytes As Byte() = My.Resources.Template_1


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Convert Object To Array Type?

Jul 26, 2009

wrote a procedure that accepts as input a parameter of type decimal, or type Long as well as an array type ar() as Boolean. First thing I will do in the procedure is establish just what type of parameter I received. No problem with the scalar types, I'll use the .GetType,determine whether it's Long of Decimal, and assign the parameter I just received to a variable of that type by using convert.toInt64 or convert.toDecimal, then do what I need to do. Not so if the parameter I received happens to be an array. .GetType will tell me what it is, for example returns "system.int64[]" if its an array of Longs, but then I fail to assign it to a variable for further processing as there appears to be no conversion method to do that.

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How To Convert Object To String Of Array

Feb 9, 2012

I have a problem here for converting object of array to string of array in my VB.Net code. The object of array is quite long and contains 6 sets of data here.

Dim varReturnResult As Object
Dim varMapData As Object
Dim StrMap() As String
varMapData = varReturnResult(2)
StrMap = Split(varMapData, vbLf)

I encountered this error "Conversion from type 'Object()' to type 'String' is not valid." when trying to retrieve the StrMap value.

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Javascript - How To Convert Object Into Array

May 15, 2012

I have a javascript that returns an array

var docArray = new Array(page, stamprect[0], stamprect[3], stamprect[2], stamprect[1], srot);
return docArray;


im getting error:

Unable to cast object of type 'System.Object[]' to type 'System.Int32[]'.

I dont know how to typecast it to array

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Nable To Cast Object Of Type 'System.Data.DataViewManager' To Type 'System.Data.DataTable'

Feb 19, 2010

I added this lines in the form load of DataGridPrinter by Merrion in the codebank..[code]Unable to cast object of type 'System.Data.DataViewManager' to type 'System.Data.DataTable'.

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Unable To Cast Object Of Type 'System.Data.DataTable' To Type 'System.Data.DataView'

Dec 31, 2009

every time i run this code i get the same error

Unable to cast object of type 'System.Data.DataTable' to type 'System.Data.DataView'.

the code is

Dim plmExcelCon As New System.Data.OleDb.OleDbConnection
Dim cmdLoadExcel As System.Data.OleDb.OleDbDataAdapter
Dim PrmPathExcelFile As String


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Convert Between An Image Object And Byte Array?

Apr 10, 2009

How do I convert between an image object and Byte Array?

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VS 2010 : Convert Datatable To JSON?

Mar 26, 2011

I want to be able to turn a datatable or dataset or the results of my SQL queries into JSON - purpose is for a WCF service which will not do it.

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Using Regex.Split To Convert A Text File's String To System.Array?

Aug 7, 2009

i'm using Regex.Split to convert a text file's string to System.Array. The end result is System.Array of 211 strings.

Now what i need is to convert System.Array to a Byte of 211. How would I accomplish this?

System.Array to Dim x(211) as Byte?? Sample code would be great here. I've already visited many sites on this subject with no luck. code below.


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Office Automation :: Method Not Found: Void Excel.Range.set_Value(System.Object,System.Object)

Mar 11, 2009

following error message:

Method not found: Void Excel.Range.set_Value(System.Object,System.Object)

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VS 2010 Unable To Cast Object Of Type 'System.Windows.Forms.MouseEventArgs' To Type 'System.ComponentModel.RunWorkerCompletedEventArgs'

Jun 25, 2010

My project worked a first and now its giving me a problem.The error


Unable to cast object of type 'System.Windows.Forms.MouseEventArgs' to type 'System.ComponentModel.RunWorkerCompletedEventArgs'.

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VS 2010 System.management Object?

May 2, 2012

I have read a ton of stuff about this but not getting it, noob error I am sure

Type 'System.Management.ManagementObject' is not defined.
Type 'System.Management.ManagementObjectCollection' is not defined.
Type 'System.Management.ManagementClass' is not defined.


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How To Convert "system.object" {string} To Integer

Jul 14, 2010

I am trying to read and write values in registry. I get return something like "system.object"{string} from reading function. I need to assign the value to a integer variable.

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VS 2010 Loop Through Array List And Convert To Integer?

Dec 31, 2010

i have data in an array list called txtarray which contains numbers, how can i loop through the array list and convert the values from into a integer variable?

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VS 02/03 Datatable - Select Statement And It Will Go To A Datatable Object

Apr 4, 2011

I have a select statement and it will go to a datatable object, I would like to do the following

textbox1.text=datatable(first field value)
textbox2.text=datatable(second field value)
textbox3.text=datatable(third field value)

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VS 2008 : Error - Unable To Cast Object Of Type 'ObjectCollection' To Type 'System.Array'

Feb 24, 2012

I am using a background worker and am attempting to use the following code. However I keep getting this error on i "Unable to cast object of type 'ObjectCollection' to type 'System.Array'."

Private Sub btnVerify_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnVerify.Click
myArray = listProxies.Items()
End Sub


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Getting Array Of Selected Datarows From A Datatable.select Into A Datatable?

Apr 8, 2009

I am getting array of selected datarows from a datatable.select.I use the commands below to get that array or datarows

Dim foundRows() As DataRow
strExpression =

Here is what I tried.I have looked at examples by MS but they all just write to the screen and I have no interest in that.

For Each rowWork In foundRows

"LineOfBusiness = 'CPP'"

foundRows = modXchange.pdtWork.Select(strExpression)

Now, I want to place the rows from foundrows into an empty data table.I did what I thought was the obvious but that only returns a bunch of rows with no data

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Visual Studio 2010 - Return Value Of Method. System.__Com.object?

Apr 10, 2012

I know it's a stupid question but I cannot find info about it.

Public Function TestFunc() As String

Dim lMapper = cRouter.StaticPortMappingCollection
Dim lMappedPort As NATUPNPLib.IStaticPortMapping
Dim Test As String


How to get this value? By my way I get *System.__ComObject*

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